Convertible sheet



FIG. 1 is a bottom, rear, left side perspective view of a convertiblesheet showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right side elevational view thereof, the left sideelevational view being a mirror image thereof;

FIG. 5 is a front elevational view thereof; and,

FIG. 6 is a rear elevational view thereof.

CLAIM The ornamental design for a convertible sheet, as shown anddescribed.